Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/S0304-3800(01)00520-8 |
Relationship between vegetation growth rates at the onset of the wet season and soil type in the Sahel of Burkina Faso: implications for resource utilisation at large scales | |
Kumar, L; Rietkerk, M; van Langevelde, F; van de Koppel, J; van Andel, J; Hearne, J; de Ridder, N; Stroosnijder, L; Skidmore, AK; Prins, HHT | |
通讯作者 | Kumar, L |
会议名称 | Annual Meeting of the Resource-Modeling-Association (RMA) |
会议日期 | JUN 26-30, 2000 |
会议地点 | WAGENINGEN, NETHERLANDS |
英文摘要 | In the Sahel, poor soil quality and rainfall levels have a great influence on pasture production and hence on secondary output. In areas where rainfall is the limiting factor for primary production, recovery of primary and secondary production after the dry season depends on soil type. On sandy soils a large fraction of rainfall infiltrates and becomes available for plant growth, stimulating fast herbage growth, while on clayey and loamy soils low infiltration rates generate runoff, leading to slower herbage growth rates. The very different moisture retention characteristic of sands and clays is another possible cause for the observed differences in growth rates. lit this paper we investigate the herbage growth rate from the onset of the rainy season. We hypothesise that, in areas where rainfall is the limiting factor for primary production. the vegetation growth rate on clayey soils is lower than that on sandy soils. We will test this hypothesis using long-term rainfall, soil types and satellite derived normalised difference vegetation index data. This research shows that the growth rates on sandy soil are significantly greater than that on clayey soils during the early part of the rainy season. We also show that these differences can be detected at large scales using satellite imagery. We also conclude that, at this scale, movement strategies of pastoralists would be intrinsically linked to not only rainfall patterns and distribution. but also to the underlying soil types in the region as this affects the quality and quantity of fodder available. (C) 2002 Elsevier Science B.V. All rights reserved. |
英文关键词 | herbage growth soil hydrology semi-arid grazing systems remote sensing NOAH-AVHRR normalised difference vegetation index |
来源出版物 | ECOLOGICAL MODELLING |
ISSN | 0304-3800 |
出版年 | 2002 |
卷号 | 149 |
期号 | 1-2 |
页码 | 143-152 |
出版者 | ELSEVIER SCIENCE BV |
类型 | Article;Proceedings Paper |
语种 | 英语 |
国家 | Netherlands;South Africa |
收录类别 | CPCI-S ; SCI-E |
WOS记录号 | WOS:000174871000011 |
WOS关键词 | RAINFALL |
WOS类目 | Ecology |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/293762 |
作者单位 | (1)Wageningen Univ, Trop Nat Conservat & Vertebrate Ecol Grp, Dept Environm Sci, NL-6708 PD Wageningen, Netherlands;(2)Int Inst Aerosp Survey & Earth Sci, Agr Conservat & Environm Div, NL-7500 AA Enschede, Netherlands;(3)Int Inst Infrastruct Hydraul & Environm Engn, NL-2601 DA Delft, Netherlands;(4)Univ Groningen, Dept Plant Biol, NL-9750 AA Haren, Netherlands;(5)Univ KwaZulu Natal, Sch Math, ZA-3209 Pietermaritzburg, South Africa;(6)Wageningen Univ, Dept Plant Sci, NL-6700 AK Wageningen, Netherlands;(7)Wageningen Univ, Eros & Soil & Water Conservat Grp, Dept Environm Sci, NL-6709 PA Wageningen, Netherlands |
推荐引用方式 GB/T 7714 | Kumar, L,Rietkerk, M,van Langevelde, F,et al. Relationship between vegetation growth rates at the onset of the wet season and soil type in the Sahel of Burkina Faso: implications for resource utilisation at large scales[C]:ELSEVIER SCIENCE BV,2002:143-152. |
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